Centrifugal spinning, twisting, and analogous machine



Feb. 18, 1941. 2,232,489

CENTRIFUGAL srmume, TWISTING, nn ANALO'GOUS MACHINE W. PRINCE-SM ITHFiled May 25, 1940 2 Sheets-Sheet 1 W? m WWW.

flTTOR/VE) 1941- I w. PRINCE-SMITH CENTRIFUGAL SPINNING, TWISTING, ANDANALQGOUS MACHINE Filed May 25, 1940 2 Sheets-Sheet 2 y F ig. 4.

UNITED STATES PATENT o icE CENTRIFUGAL SPINNING, 'rwrs'rm'o, AND

. ANALOGOUS monnvn William Prince-Smith, Kclghley, England ApplicationMay 25, 1940, Serial No. 337,297

- In Great Britain May 15, 1939 3 Claims. (CI. 57-34) This inventionrelates to spinning, twisting, yarns are directed from the drawingrollers by and analogous machines, and in particular to said stationaryyam guid may be non-rotatmachines, forthe centrifugal spinning,twisting, ably disposed concentrically of the yarn guides or the like,of yarns, threads and similar fibrous in respect to which they may bemoved collec- I 5 materials, wherein each yarn is traversed ver tivelyby means of a traverse rail and suitable 5 tically by a. reciprocatingguide within a revolvtraversing mechanism. ingyarn holder upon the innersurface of which Each spinning or like unit may comprise an the yarn islaid centrifugally and from which inverted cup-shaped yarn holder havinga veryarn holder it is subsequently caused automati- V tlcal tubularstem surrounded by a driving whorl cally to be wrapped on to a bobbin orlike exterand secured in ball bearings mounted in an over- 10 nallywound package inserted thereinto from head bracket carried by themachine frame below below and provided with means to engage the andforwardly of the drawing rollers, and held yarn in order to initiate itstransfer to the bobin a fixed bracket and projecting through said bin,the yarn delivery means being automatically stem above the p of each o re e may be stopped for that purpose and the yarn holder a guide tubehaving in its upper end a pot eye 15 continuing to revolve. constitutinga stationary yarn guide.

The invention has for its principal object to Concentrically with andexternally of said staprovide a machine, for the centrifugal spinning,tionary guide tube, a second tube may be artwisting or the like of yarnsor threads, whereof ranged slidably and m y be Pr v w h a eyetheconstruction and operation secure a high let at its lower extremity,said second-tube or 20 rate of production without detriment to thetraversing guid ing non-rotatable and bein yarns or threads howeverdelicate their nature; slotted vertically to permi its Passage P hanother object being to reduce to a minimum the bracket suppor n thestationary yarn guide and strains to which the yarns ar subjectedadjaalso to avoid during its reciprocation contact with cent' theirdelivery point in centrifugal spinning the yarn extending from thedrawing rollers to 25 and like machines, the stationary thread guide.

According to the invention, the means for guid- Each tubular traversinguide is supported by ing and the means for traversing the yams in a abracket extending from a traverse rail carried centrifugal spinning,twisting or like machine of by he usual P n he c n c ion between thekind specified, are so designed and cooperate each guide and its bracketmay be de h l -30 that the delivery angle of the yarn to the yarn Thisdetachable connection may consist of a holders remains constant duringthe building of link r iculated to a horizontal lug secured to the yarnmasses within the holders. the pp n of a d tubular guide, wh l 1 To thisend, adjacent each yarn holder there y be pr vi d wi h depending D to ereis provided a stationary yarn guide in respect to I ceived by anaperture in the supporting bracket. 35 which a traverse guide isreclprocable within the Further, in order to enable each tubulartraverse holder and is shaped so as to avoid, during its guide to bemaintained in an elevated position reciprocatory movement, the path orthe yarn wh n ne essary or desirable. each gu d m y be extending fromthe drawing rollers to the yarn formed with a notch at right angles toand at guides, an appropriate height in the vertical slot therein. 4

In one constructional embodiment of the in- The invention is illustratedby way of example vention a centrifugal spinning, twisting or like inthe accompanying drawings which show, in machine may be provided with aseries of indisectional elevation a portion of a machine frame viduallydriven yarn holders into each of which and as much of a spindle unit andits associated 5' a stationary tubular yarn guide and a reciproparts asare necessary to the understanding of cable tubular traverse guideproject axially, and the invention as applied to the known type of aseries of bobbin supports may be located below centrifugal spinningmachine embodying insaid series of yarn holders to enable bobbins orverted cup-shaped yarn holders. like externally wound packages to bemanipulated Figure 1 shows the position of the parts at the with respectthereto; completion of the spinning of a yarn mass within 50 Theseindividually driven yarn holders may be a yarn holder, and Figure 2 theposition of the 'supportedin overhead bearings carried. by the partsjust prior to the commencement of the remachine frame which alsosupports the stationwindingpperation. Figure 3 is a fragmentary ary yarnguides co-axially with said holders; and plan view showing theconnections to the means the reciprocable traverse guides, into whichthe for traversing the yarn within the yarn holder, 55'

Figure 4 is a fragmentary rear elevation of part of said yarn traversingmeans, and Figure 5 is an enlarged detail sectional view.

I represents part of the main framework of one side of the machine towhich is secured a plurality of brackets 2 supporting a fixed horizontalcontinuous rail 3. 4 indicates one of the lower front rollers by whichthe yarn Y is delivered to the respective spindle units.

Secured at intervals along the rail 3 is a number of overhead bracketsor cages such as 5, each carrying upper and lower ball bearings 8, 6,whereof the inner races are fast on the tubular stem or neck 1 of aninverted cup-shaped yarn holder 8 supported by the cage 5 and adapted tobe driven through the medium of the usual or appropriate mechanism bymeans of a tape (not shown) passing around a whorl 9 fixed to thetubular stem or neck 1.

Located below and coaxially with each yarn holder 8 is a spindle l0secured adjustably in a bracket ll fixed to a continuous rockshaft l2supported at intervals by rack pillars such as 13 mounted so as to beslidable vertically in guides such as H fixed to a stationary continuousrail 15, the rack pillars l3 being actuated by pinions such as I 8 keyedto an operating shaft 11 ex tending along the machine and derivingmotion from known or appropriate mechanism not shown.

The upper end of each spindle l0 terminates in a bobbin peg l8 at thelower end of which is a flange I9 upon which a bobbin 20 rests.

2| is a bracket secured to the top of the cage 5 and projectingforwardly so as to maintain a guide tube 22 concentrically within thetubular neck 1 of the yarn holder 8; the lower extremity of said guidetube 22 terminating slightly above stituting a stationary yarn guide.

24 is a traverse rail supported at intervals as 25 and adapted to beoperated in the well understood manner by builder or traversingmechanism, and to this traverse rail 24 is secured adjacent to eachspindle unit a forwardly projecting bracket 28 which supports a slidabletube 21 concentrically with and externally of said stationary guide tube22.

This slidable tube 21, which is fitted at its lower end with an eyelet28, and which constitutes a tubular traversing guide, is formed from itsupper end to below the middle of its length with a. vertical slot 29disposed rearwardly of the tube projecting from the tube and havingarticulated to it at 32 a link 33 the free end of which is formed with adepending peg 34 receivable by a recess or an aperture formed in theforward end of the bracket 26. The width of the slot 29 in junction withthe staionary guide tube 22.

During the operation of the machine the yarn Y, which passes from theperiphery of the roller 4 to and through the stationary pot eye 23 andemerges through the eyelet 28 in the tube 21 and, extending radiallytherefrom at Yl, becomes laid centrifugally upon the inner surface ofthe revolving yarn holder 8 wherein an annulus Y2 of yarn is built up bythe reciprocable movement of the tube 21 actuated by the traverse rail24 and known builder mechanism, and during this reciprocation of thetraversing yarn guide 21, 28, there is no interference with the lengthof yarn extending between the roller 4 and the eyelet 23, by reason ofthe vertical slot 29 in the tube 21, with the result that throughout theentire spinning operation the delivery angle of the yarn Y to the yarnholder 8 remains constant and a uniformly minimum strain is imparted tothe yarn.

Assuming that the correct length of yarn has been laid in all the yarnholders 8, the tubes 21 are elevated collectively into the positionshown in Figure 2 by the manipulation by hand or otherwise of thetraversing mechanism controlling the rail 24, and thereafter the bobbins29 are raised axially into the yarn holders, by means of the rackpillars I3 and associated operating mechanism, the yarn delivery to eachyarn holder being automatically stopped by the de-clutching of the frontroller towards the end of the ascent of the bobbins, as is known, andthe yarn mass in each yarn holder (which is still rotating) is thenre-wound onto its respective bobbin, after which the full bobbins arelowered from the yarn holders and spinning is re-commenced. Therewinding and re-starting operations, however, form no part of thepresent invention and are consequently not detailed.

In the event of a yarn breaking during spinning the operative can dealwith the yarn holder concerned, while all the remainder continuespinning, by detaching the link 33 of the appropriate traversing guidetube 21 from its corresponding bracket 26 and by raising the tube notchor recess 30 is aligned with the bracket 26 whereupon the tube 21angularly to engage the notch with the 21 until the neck of the isturned in which it is retained until the contents of the yarn holderhave been removed.

What I claim is:

1. In a centrifugal spinning, twisting or like machine, a stationaryyarn guide positioned adjacent each yarn holder, a traverse guideslidably mounted about said stationary guide and into PRINCE-SMITH.-

